The incident report also noted the 5-7, 130-pound woman had "apparent broken bones," and that alcohol was suspected to have been a factor. No suspect was listed, and there was "no known motivation" for the alleged assault and battery.

Amelia Rae Molitor, 20, told The Oklahoman that she did not know Mixon, but that after "harassing" a group of her friends, he punched her once.

Molitor also told The Oklahoman she hopes Mixon serves time in prison.

"That's what he deserves," she said. "I don't care if he's the star running back or not."

Mixon, a 6-1, 209-pound running back from Oakley, Calif., was ranked as a five-star recruit by Rivals.com, 247sports.com and Scout.com. Considered one of Oklahoma's top running back recruits in years, he arrived on campus earlier in the summer and has been expected to have a chance to contribute immediately as a freshman. He turned 18 Thursday.

Oklahoma released a statement Friday afternoon saying "the matter ‚?¶ is under internal review." Oklahoma athletic director Joe Castiglione told the Tulsa World: "We take reports like this very seriously and we're gathering information. That's really all we can say."

Finlay, Mixon's attorney, told The Oklahoman, "Joe is definitely looking forward to the truth coming out ‚?¶ that's about all I can say at this point."